Stephen Beaton ← The Voice of the Proton Community My feedback 1 result found S/MIME signature validation support for e-mail clients via Proton Bridge 22 votes Vote Vote Vote Vote We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close Vote We’ll send you updates on this idea 2 comments · Proton Mail & Calendar » New feature · Delete… · Admin → How important is this to you? Not at all You must login first! Important You must login first! Critical You must login first! Your importance score has been recorded. We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close Submit Rating An error occurred while saving the comment Stephen Beaton commented · Jul 27, 2026 · Edit… · Delete… Love everything about Proton mail, but lack of S/MIME was a deal killer for me. I use S/MIME extensively with my customers and for communication with financial institutions. Save Submitting... Stephen Beaton supported this idea · Jul 27, 2026
Love everything about Proton mail, but lack of S/MIME was a deal killer for me. I use S/MIME extensively with my customers and for communication with financial institutions.